Microsoft is pushing forward the concept of a "pay-per-use" computer for poorer countries. The basic premise is sound. You get to buy a computer for dirt cheap; then buy cards for X number of hours to use it. The cards amount to a loan payment and when you have used it enough the computer permanently unlocks and you can then use it freely.
Big problem is the computer has to be connected to the Internet via a modem. Considering the areas and poverty that people who will find this program useful, I'm not sure they are going to have a phone line in the first place.